50   pthread_rwlock_t* rwlock =  in RWMutexImpl()  local
55   bzero(rwlock, sizeof(pthread_rwlock_t));  in RWMutexImpl()
59   int errorcode = pthread_rwlock_init(rwlock, nullptr);  in RWMutexImpl()
64   data_ = rwlock;  in RWMutexImpl()
70   pthread_rwlock_t* rwlock = static_cast<pthread_rwlock_t*>(data_);  in ~RWMutexImpl()  local
71   assert(rwlock != nullptr);  in ~RWMutexImpl()
72   pthread_rwlock_destroy(rwlock);  in ~RWMutexImpl()
73   free(rwlock);  in ~RWMutexImpl()
79   pthread_rwlock_t* rwlock = static_cast<pthread_rwlock_t*>(data_);  in reader_acquire()  local
80   assert(rwlock != nullptr);  in reader_acquire()
82   int errorcode = pthread_rwlock_rdlock(rwlock);  in reader_acquire()
89   pthread_rwlock_t* rwlock = static_cast<pthread_rwlock_t*>(data_);  in reader_release()  local
90   assert(rwlock != nullptr);  in reader_release()
92   int errorcode = pthread_rwlock_unlock(rwlock);  in reader_release()
99   pthread_rwlock_t* rwlock = static_cast<pthread_rwlock_t*>(data_);  in writer_acquire()  local
100   assert(rwlock != nullptr);  in writer_acquire()
102   int errorcode = pthread_rwlock_wrlock(rwlock);  in writer_acquire()
109   pthread_rwlock_t* rwlock = static_cast<pthread_rwlock_t*>(data_);  in writer_release()  local
110   assert(rwlock != nullptr);  in writer_release()
112   int errorcode = pthread_rwlock_unlock(rwlock);  in writer_release()